Martin hdbbe



(No Model.) l

, M. HUBBE 8v M. A. HARDY.

SUBMARINE TORPEDO.

No. 255,386. Patented Mar. 21,1882.

N. PETERS. Pmwumugmpmr, wnnmgmn, n, c.

UNTTED STATES MARTIN HUBBE, OF BAYONNE, N. J., AND

PATENT OFFICE.

MARoUs A. HARDY, or NEwPoRr,

R. I., ASSIGNORS TO FREDERIC H. SNYDER, OF JERSEY CITY, N. J.

SUB-MARINE TORPEDO.

SPECIFICATION forming part of Letters Patent No. 255,386, dated March21, 1882. Application atea July 21, wel. No model.)

To all whom it 'may concern:

Be it known that we, MARTIN HURRE, of Bayonne, in the county of Hudsonand State of New Jersey, and MARCUS A. HARDY, of Newport, in the countyof Newport and State of Rhode Island, have invented eertaill new anduseful Improvements in Submarine Torpedoes, of which the t'ollowing is aspecifica tlon.

Our invention principally relates to selfpro peiling torpedoes in whichthe motive power 1s furnished by compressing air or gas ill a rescrvoirin said torpedo.

One feature ot' our invention is applicable only to torpedoes in whichthe engine is contained in a compartment which is filled with water andill comlnunication with the surrounding element; and it consists in thecombination, in a torpedo, of a water-compartment for zo all enginehaving holes for the entrance of water, a screw-shaft extendingtherefrom, and a tube leading aft from said compartment to the exteriorof the hull and loosely surroulldng the screw-shaft, whereby thenecessity ot' any stuffing-box for the said shaft is obviated and powerwhich has been heretofore consumed by friction is saved.

Other features of our invention consist in certain novel details in theconstruction of the 3o flask or reservoir in which air or gas is to becompressed to serve as a motive power, and in the manner of securing thesaid tiask or reservoir in the torpedo so that it forms a portion of thehull thereof.

In the accompanying drawings we have divided the hull, showing only one-half the length in each figure, on account of its great length andcomparatively small diameter.

Figures l and 3 together represent a central 4o longitudinal section ofthe whole. torpedo, and Figs. 2 alld et represent a plan thereof, with atiask or reservoir for gas or air, of slightlymodified construction, nopart of ollr present invention.

Similar letters of reference designate corresponding parts in all thegures.

The hull of the torpedo is composed entirely, or nearly entirely, ot'sheet metal, and com prises a spindle or cigar shaped bow-section, 5o A,a cylindric middle section, B, and a conical stern or after section, G.The bow or forwhich, however, forms ward section, A, comprises amagazine for the explosive charge, forllled by bulk-heads ct a', andpossesses in itself no novel features. The cyliudric nliddle section, B,comprises a flask or reservoir, B', and may be divided into as manyseparate compartments as may be desirable. As here represented, it isdivided back of the flask or reservoir B' by bulk-heads b b b b'", toform four compartments, in one of 6o which, D, may be contained thepropellingengine, another, E, of which may be used as acoil-chalnber,from wllich an electric cable is paid out as the torpedo moves forward,and the other two of which nlay serve for any other useful purpose.

F designates a screw-shaft, which is provided at its inner end with aspur-gear, c, through which motion may be imparted to it, and Gdesignates an ordinary screw-propeller mount- 7o ed upon said shaft. Theshalt F is mounted ill a suitable inboard bearing, d, in the enginecompartnlentD,and a stem-bearing supported by a hanger, e, which isshown as secured to and depending t'roln a bulk-healhf, near the 75 endof the conical stern or after section C. The said shaft extends rearwardfrom the engine-compartment through the conical section C and out uponthe under side thereof'.

From Fig. 1 it will be clearly seen that the 8o conical stern or aftersection C, is connected to the middle section, B, so that the uppersides ot the two sections are in line, or nearly in line, and that theunder side of the after or' stern section C tapers quickly rearwardlyand upwardly from its union with said middle section. This inode ofconstruction is very advantageous, because the buoyancy of the hull atthe top is muchincreased,because the screw G maybe arranged beneath andunder cover 9o of the hull, and because said screw projects so muchbelow the bottom of the hull that it may work in solid water, thusgreatly increasing the speed of the torpedo and effecting a saving ofpower, which in a boat of this kind is of the utmost importance. L,

Between the under side ofthe conical steril or after section G and thescrew-shaft F is arranged a triangular skag or keel, H, and back of thisis arranged the rudder I, which is there- Ico by greatly protected frominj nry.

The sides of the compartment D which contains the engine are perforated;or the said compartment is otherwise constructed so as to aordcommunication with the surrounding element and perinit a. freecirculation of Water through the compartment, thus cooling all parts ofthe engine and effectually preventing the heating of all the movableparts. From the said engi11e-compartment D rearwardly to the exterior ofthe hull extends a tube, J, open at its inner and outer ends and ofsufficient sizeA to allow the screw-shaft F to pass through it,

thus forming a Water-tight passage for the shaft through the conicalafter section G. Inasniuch as the said compartment D is always full ofwater, n stufng-boxes are needed at the ends of said tubes, and thepower ordinarilyconsu in ed by the friction of the screw-shaft in itsstuffing box is saved, whilewater can pass through the tube around theshaft.

ln order to prevent any lines, cables, Weeds, or grass from being woundaround the shaft F and fouling it, we mayinclose the shaftwithin astationary tube extending from the end ofthe tube J to the stern-bearinge.

From the compartment E a tube, g, extends rearwardly, preferably throughthe propellershaft, which is hollow for its reception, and through thistube the cable from the coil-chamber is paid out, and the entanglementor fouling of said cable iu the screw or by the rudder is prevented.

We will now describe the construction ot' the` tiask or reservoir B forair or gas. It is co1n posed of a cylindric bodv portion, l', andseparate heads ly l, preferably convex or hemispherical, securedtherein, as shown in Fig. 3.v \Vhere the iiask or reservoir is composedof the s traigh t cylindric body 7L and the separate heads ll the headsmay be secured in the body in any suitable manner. Two methods of makingthis connection or joint are shown in Fig. 3, one,` end of the eylindricbody h being internallyscrew-threaded and the head being externallyscrew-threaded to engage therewith, while the other end of said body ismade slightly daring or taper internally, and the head is made with acorresponding external taper fitting in said internal taper, and securedtherein by brazing or soldering.

In order to provide for securingthe ask or reservoir B' to the portionsof' the hull upon each side thereof, we insert in the ends of the lportions of the hull to which the dask or reservoir is to be connectedrings m, which are internally screw-threaded, and we construct the headsl of the flask or reservoir B with external screw-threads to engage withsaid internal screw-threads. This method ot connectingthe flask orreservoir with the sections of' the hull upon each side thereof is verydesirable, inasmuch as it provides for removing the dask or reservoirandreplacingit with another, if necessary.

What We claim as our invention, and desire to secure by Letters Patent,is-

l. The combination, in a movable torpedo, of a water-compartment for anengine, having openings for the admission ot' water toit, a screw-shaftextending therefrom, and a tube leading aft from said compartment to theexterior ofthe hull and loosely surrounding' said screw-shaft,substantially as specified.

2. The combination of the middle section, B, comprising awater-compartment, D, for an engine, the conical after or stern sectionO, arranged with its upper side in line with the upper side of thesection B, the screw-shaft F, and the tube J, affording provision forthe circulation of Water from said compartment D aroundl thescrew-shaft, substantially as specied. L

3. The combination,in the hull of a movable torpedo, of two cylindric orannular sections and an interposed flask or reservoir having heads madeseparate from its body and inserted into its body, the said heads beingalso inserted into the sections between which the flask or reservoir isplaced, and secured therein at the circumference, substantially asspecified.

4. The combination,in the hull of a torpedo, of two cylindric or annularsections, AB, each having in its end an internally screw-threaded ring,m, and the interposed iiaslr or reservoir composed of the body handseparate heads l l, provided with external screw-threads for engagingwith vthe internally screw-threaded rings in, substantially asspecified.

MARTIN HUBBE. MARCUS A. HARDY.

Witnesses:

T.'J. KEANE, DARIUs BAKER, J oHN G. Cos'rELLo.

